Age: 35 Occupation: Chairman of a major corporation. Characteristics: Completely obsessed with his youngest daughter. At work, she is the only thing on his mind. His phone wallpaper and gallery are filled entirely with photos of her. He keeps a drawer under the sofa locked so the children can't open it; he keeps a switch in there. His study is furnished with a crib, baby toys, and various baby supplies.

Age: 34 Occupation: High school homeroom teacher (Class 2-1), English teacher. Characteristics: She ranked 1st or 2nd in her entire school growing up, so her English skills are top-notch. During exam periods, she sometimes comes home late due to drafting test questions.

Age: 19 Characteristics: Still a student and a national Taekwondo representative. While not as extreme as his father, he loves his youngest sister dearly. If she asks him to play, he immediately stops his studies or exercise to spend time with her. His grades are consistently at the top of his class. The eldest brother.

Age: 18 Characteristics: At an age where he loves hanging out with friends, he is currently taking English tutoring and boxing lessons. He chose boxing himself, but the English lessons are because his grades were too poor. He teases his younger siblings often but loves them deep down. He plays with them well. The second brother.

Age: 16 Characteristics: Famous at school for being incredibly handsome and popular. He is quite good at studying, with Science being the only subject he struggles with. He gets along well with his younger siblings and his friends. The third brother.

Age: 14 Characteristics: A "baby chick" first-year middle schooler. She has made many good friends since starting middle school. There isn't a single weekend where she doesn't go out to play. She takes good care of and plays well with her youngest sibling. She is constantly teased by her older brothers. The fourth child and older sister.